Acetylene-gas burner for cooking-stoves, &amp;c.



No. 664,595. Patented Dec. 25, 1900. F. TRENDEL. ACETYLENE GAS BURNERFOR COOKING STDVES, &0.

(Application filed Dec. 5, 1899.)

(No Model.)

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UNITED STATES PATENT OFFICE.

FRITZ TRENDEL, OF BERLIN, GERMANY.

ACETYLENE-GAS BURNER FOR COOKlNG-STOVES, 800.

SPECIFICATION forming part of Letters Patent N 0. 664,595, datedDecember 25, 1900.

Application filed December 5,1899. Serial No- 739 282. (No model.)

T0 on whom it may concern/.-

Be it known that I, FRITZ TRENDEL, a subject of the Emperor of Germany,residing at Michaelskirchplatz 22, Berlin, Germany,have invented certainnew and useful Improvements in Acetylene-Gas Burners for Cooking- Stovesand the Like; and I do hereby declare the following to be a full, clear,and exact specification of the same, such as will enable others skilledin the art to which it appertains to,make and use the same, referencebeing had to the accompanying drawing, forming a part of thespecification.

Experiments have shown that a thorough mixture of acetylene and air asused for cooking purposes burns at first with a nonluminous flame; butas soon as the cookingstove becomes hot there is no longer a completemixture, but the flame has'a luminous core produced by an imperfectmixing of the gas with the air.

This invention has for its object to provide a burner which shallproduce a non-luminous flame and maintain the same under all ordinaryconditions.

In the accompanying drawing, which is a vertical sectional View of theinvention, h is the gas-supply pipe,provided with a shoulder 11 andexteriorly threaded from said shoulder to its outer end, the tip ornozzle 01, being secured in the open upper end of the pipe h.

b is the principal mixing-pipe, which is supported on arms is, formedintegral with the said pipe and with acollar Z, which is threaded uponthe upper end of pipe h, a packing-ring m being interposed between thelower end of said collar and the shoulder i of pipe h to make a tightjoint between the collar Z and pipe 72 and leaving spaces for the entryof air between the arms k.

In a narrow opening in the bottom of pipe I) is, as at f, secured amixing-pipe e, of smaller diameter than pipe I) and projecting up intothe interior of said pipe 19, leaving a space g, asshown.

Formed with and at the upper end of pipe I) is a globular head 0, whichforms the main burner, being provided with suitable openings 42. Whilethe acetylene gas and air are thoroughly mixed by means of the narrowedmixing-pipe e, the hollow space prevents the mixture of air and gas frombeing intercepted at the outlet-opening of the narrow tube 6, thevelocity of the inflow from diminishing, and any interference with thethorough mixing of the gas and air.

The gas has rather a free course and can at once spread out, the effectof which is that the acetylene-burner burns continuously with a uniformnon -luminous flame even when it is fully heated and is under moderatepressure. If, on the other hand, the space between the narrowmixing-tube e and the farther mixing-tube b be oompletelyfilled, the airand gas will no longer be thoroughly mixed when the stove is onceheated.

Having now particularly described and ascertained the nature of mysaidinvention and in what manner the same is to be performed, I declare thatwhat I claim is- An acetylenegas burner comprising the supply-pipe hshouldered at e and exterior-1y threaded from said shoulder to its outerend, the collar Z threaded upon said pipe, the arms formed integral withthe collar, the main mixing-pipe formed integral with and supported bysaid arms at a distance above said collar, said pipe I) being providedwith an opening in its bottom of less diameter than its main body, amixing-pipe e secured in said opening, projecting up into the pipe b andleaving an annular space, and a main burner 0 formed integral with andat the upper end of pipe I) and provided With openings n, allsubstantially as described and for the purposes set forth.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

FRITZ TRENDEL.

Witnesses:

HENRY HASPER, WOLDEMAR HAUPT.

